body {
  background: #000;
}

html {
  font-size: 75%;

  /* Apple's new system font
   */
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen-Sans, Ubuntu, Cantarell, Helvetica Neue, PingFang SC, Hiragino Sans GB, STHeiti, Microsoft Yahei, Wenquanyi Micro Hei, sans-serif;
}

html, body {
  cursor: default;
  padding: 0;
  margin: 0;
}

body, button, input {
  font-size: 13px;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

h1, h2, h3, h4, h5, li, ol, p, ul {
  padding: 0;
  margin: 0;
}

h1 {
  font-size: 3.33rem;
}

button {
  -webkit-appearance: none;
  cursor: pointer;
  display: inline-block;
  line-height: 1;
  margin: 0;
  position: relative;
  text-align: center;
  white-space: normal;
  outline: 0;
  user-select: none;
  text-decoration: none;
}

li, ol, ul {
  list-style: none;
}

#app, [data-reactroot], body, html {
  height: 100%;
  overflow: hidden;
}

[class*=icon-] {
  display: flex;
  align-items: center;
}

[class*=icon-]:before {
  width: 1em;
  height: 1em;
  margin-right: .5em;
  content: '';

  /*
  background-position: 50%;
  background-size: cover;
  background-repeat: no-repeat;
  */
  background: 50%/cover no-repeat;
}

@media only screen and (max-width: 375px) {
  html {
    font-size: 70%;
  }
}

@media only screen and (max-width: 320px) {
  html {
    font-size: 60%;
  }

  body, button, input {
    font-size: 12px;
  }
}